Investigation on Piezoelectric Output Property of Bi2.5Na3.5Nb5O18 Modified P(VDF-TrFE) Piezoelectric Composite Films with Hierarchical Layer Structure.

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-07-25 DOI:10.1021/acs.langmuir.5c02546

Jun Luo,Jizhong Deng,Zhiyi Wu,Yuanyu Wang

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引用次数: 0

Abstract

In this study, Bi2.5Na2.5Nb5O18 (BNN5)/poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) piezoelectric composite films were prepared via electrospinning technology. Meanwhile, the uniaxial intermittent alternating dual-spray method was employed to obtain composite films with alternating concentration variations of BNN5, which were then utilized to fabricate piezoelectric nanogenerators (PENGs). Among them, the composite film with a BNN5 content of 3/5 wt % exhibited the optimal β-phase proportion, reaching 85.1%. The piezoelectric output performance of this composite film was significantly enhanced: it had an output voltage as high as 25.3 V, which was 339.2% higher than that of the P(VDF-TrFE) film and 54.7% higher than that of the 4 wt % composite film with the same concentration. When the resistive load was 1 MΩ, the peak instantaneous output power was 38.3 μW, with a calculated current of 6.2 μA and an output power density of 5.1 μW/cm2. Both the current and power were higher than those of most reported PVDF/P(VDF-TrFE)-based piezoelectric films. The durability test with over 2200 cycles demonstrated that the piezoelectric composite film had excellent mechanical stability. This work presents a strategy to boost the output performance of piezoelectric composite films, namely, fabricating P(VDF-TrFE) composite films using the uniaxial intermittent alternating dual-spray technique, to meet the requirements of wearable and flexible electronic devices.

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Bi2.5Na3.5Nb5O18改性P（VDF-TrFE）层状压电复合薄膜压电输出性能研究

本研究采用静电纺丝技术制备了Bi2.5Na2.5Nb5O18 (BNN5)/聚偏氟乙烯-三氟乙烯（P(VDF-TrFE)）压电复合薄膜。同时，采用单轴间歇交替双喷法制备了BNN5浓度交替变化的复合膜，并将其用于制备压电纳米发电机（peng）。其中，BNN5含量为3/5 wt %的复合膜β相比例最佳，达到85.1%。该复合膜的压电输出性能得到显著提高，其输出电压高达25.3 V，比相同浓度的P（VDF-TrFE）膜高339.2%，比相同浓度的4 wt %复合膜高54.7%。当电阻性负载为1 MΩ时，瞬时输出功率峰值为38.3 μW，计算电流为6.2 μA，输出功率密度为5.1 μW/cm2。电流和功率均高于已有报道的PVDF/P（VDF-TrFE）基压电薄膜。2200多次循环的耐久性试验表明，压电复合膜具有优异的力学稳定性。本文提出了一种提高压电复合薄膜输出性能的策略，即利用单轴间歇交替双喷涂技术制备P（VDF-TrFE）复合薄膜，以满足可穿戴和柔性电子器件的要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).